TPI flow numbers (was Re: ALDL data)

[Dave Zug]

Thanks KEvin, I have the TPIS book as well as John L's SBC book... What I'm after is numbers for the ENTIRE SYSTEM, ASSEMBLED. I dont imagine anyone but the manyfacturers have gone to this extent, and it may be guarded info??

Thanks again!
  ----- Original Message ----- 
  From: Kevin Crain 
  To: gmecm at diy-efi.org 
  Sent: Sunday, September 03, 2000 2:37 PM
  Subject: TPI flow numbers (was Re: ALDL data)


    At 11:13 PM 9/2/00 -0700, Dave Zug wrote: 

    P.S. .. anyone out there have flow numbers on a complete stock TPI intake system, and Accel / Ligenfelter units? ;-)


  ---------------------------
  Hey, finally a question to which I have the answer!! I compiled the data below from two sources (GM High Tech Performance magazine and TPIS Insider Hints reference).

  From GM High Tech Performance July 2000 issue:

  Runners:
  Stock: 203.17 cfm
  Accel: 242.02 cfm
  Extrude/Accel: 275.83 cfm
  Super Ram: 289.18 cfm

  Stock Intake w/ the Following Runners:
  Stock: 198.72 cfm
  Accel: 213.52 cfm
  Extrude/Accel: 217.11 cfm
  Super Ram: 220.67 cfm

  Accel Intake w/ the Following Runners:
  Stock: 215.83 cfm
  Accel: 232.53 cfm
  Extrude/Accel: 243.21 cfm
  Super Ram: 240.24 cfm

  Stock Intake w/ 3/8" Radiused Inlet: 222.45 cfm

  Accel Intake w/ 3/8" Radiused Inlet: 251.51 cfm

  Extrude Honed Accel Intake w/ " ": 275.83 cfm

  Extrude Honed Accel Intake w/ Accel Runners: 266.94 cfm

  ---------------------------
  From TPIS Insider Hints:

  (note: TPIS' flow data on same components varies by approximately -15cfm versus GMHTP data)

  Stock throttle body: 668 cfm
  " with TPIS airfoil: 709 cfm

  Stock MAF: 529 cfm
  Screens out: 711 cfm
  Fins removed: 750 cfm

  Stock intake base w/ stock runners: 181 cfm (vs. 198.72 cfm in GMHTP)

  Stock intake base w/ cast large runners: 193 cfm (vs. 213.52 cfm " ")

  Stock intake, stock runners, ported plenum (presumably stock 48mm TB: 183 cfm

  Stock intake, stock runners, ported plenum, TPIS airfoil: 187 cfm

  Ported intake, stock runners, ported plenum, TPIS airfoil: 193 cfm

  Ported intake, siamesed runners, ported plenum, TPIS airfoil: 203 cfm

  HTH,
  -Kevin





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